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Finding the Fourth Proportional to 10,486.74, 15,801.77 and 8,677.56

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Solution

The fourth proportional to 10,486.74, 15,801.77 and 8,677.56 is: 13,075.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.74 : 15,801.77 = 8,677.56 : x
  2. Step 2: Convert to fraction form
    10,486.74/15,801.77 = 8,677.56/x
  3. Step 3: Cross multiply
    10,486.74x = 15,801.77 × 8,677.56
  4. Step 4: Simplify right side
    10,486.74x = 137,120,807.28
  5. Step 5: Solve for x
    x = 137,120,807.28/10,486.74
  6. Step 6: Final answer
    x = 13,075.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.